材料科学
钝化
钙钛矿(结构)
能量转换效率
电极
蒸发
光电子学
化学工程
纳米技术
图层(电子)
热力学
物理
工程类
物理化学
化学
作者
Seongrok Seo,Seonghwa Jeong,Changdeuck Bae,Nam‐Gyu Park,Hyunjung Shin
标识
DOI:10.1002/adma.201801010
摘要
Abstract Despite the high power conversion efficiency (PCE) of perovskite solar cells (PSCs), poor long‐term stability is one of the main obstacles preventing their commercialization. Several approaches to enhance the stability of PSCs have been proposed. However, an accelerating stability test of PSCs at high temperature under the operating conditions in ambient air remains still to be demonstrated. Herein, interface‐engineered stable PSCs with inorganic charge‐transport layers are shown. The highly conductive Al‐doped ZnO films act as efficient electron‐transporting layers as well as dense passivation layers. This layer prevents underneath perovskite from moisture contact, evaporation of components, and reaction with a metal electrode. Finally, inverted‐type PSCs with inorganic charge‐transport layers exhibit a PCE of 18.45% and retain 86.7% of the initial efficiency for 500 h under continuous 1 Sun illumination at 85 °C in ambient air with electrical biases (at maximum power point tracking).
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